JP2015107502A - Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same - Google Patents

Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same Download PDF

Info

Publication number
JP2015107502A
JP2015107502A JP2013251193A JP2013251193A JP2015107502A JP 2015107502 A JP2015107502 A JP 2015107502A JP 2013251193 A JP2013251193 A JP 2013251193A JP 2013251193 A JP2013251193 A JP 2013251193A JP 2015107502 A JP2015107502 A JP 2015107502A
Authority
JP
Japan
Prior art keywords
spray nozzle
spray
translucent
water
collision plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2013251193A
Other languages
Japanese (ja)
Other versions
JP6201699B2 (en
Inventor
智行 楠
Tomoyuki Kusu
智行 楠
平 八久保
Taira Yakubo
平 八久保
杉山　誠司
Seiji Sugiyama
誠司 杉山
和久 藤原
Kazuhisa Fujiwara
和久 藤原
梶原　貢
Mitsugi Kajiwara
貢 梶原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Priority to JP2013251193A priority Critical patent/JP6201699B2/en
Publication of JP2015107502A publication Critical patent/JP2015107502A/en
Application granted granted Critical
Publication of JP6201699B2 publication Critical patent/JP6201699B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Continuous Casting (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a spray nozzle abnormality detection device capable of detecting water amount density ununiformity of spray water which is a precursor to spray nozzle closure, and a spray nozzle abnormality detection method using the same.SOLUTION: A spray nozzle abnormality detection device 10 for detecting abnormality of a spray nozzle 11 in which water amount density of spray water W injected at a steel material or cast pieces is 20-700 L/m/min includes: a translucent collision plate 16 with which the spray water W injected from the spray nozzle 11 is caused to collide; a shield plate 12 installed between the spray nozzle 11 and the translucent collision plate 16 which is provided with two or more through-holes 14 through which the spray water W passes; and an imaging device 22 for imaging a state of collision of the spray water W that has passed through the through-holes 14 of the shield plate 12 and collided with the translucent collision plate 16, and an illuminating device 24 for illuminating the translucent collision plate 16, which are installed on a side opposite to the spray nozzle 11 with the translucent collision plate 16 in between.

Description

本発明は、鋼材又は鋳片の冷却に使用されるスプレーノズルの異常を検出するスプレーノズル異常検出装置及びそれを用いたスプレーノズル異常検出方法に関する。   The present invention relates to a spray nozzle abnormality detecting device for detecting an abnormality of a spray nozzle used for cooling a steel material or a slab, and a spray nozzle abnormality detecting method using the same.

鉄鋼の製造工程では、熱間圧延鋼材や連続鋳造鋳片の搬送ライン上に配置したスプレーノズルからスプレー水を噴射して鋼材や鋳片を冷却することが一般に行われている。スプレー水による鋼材や鋳片（以下では、「鋼材等」と記載する。）の冷却では、多くの場合、均一冷却が必要とされる。そのため、スプレーノズルから噴射されるスプレー水の水量密度（単位面積及び単位時間当たりのスプレー水供給量）は、スプレー水が衝突する鋼材等の表面において均一であることが求められる。しかし、スプレーノズルに供給される冷却水にカルシウム等が含まれているため、このカルシウム等がスプレーノズルの内部に付着堆積してスプレー水の噴射が不均一（水量密度不均一）となる場合がある。カルシウム等の付着堆積が進行すると、スプレー水の水量が減少し、さらに進行すると、スプレーノズルが完全に閉塞してスプレー水の噴射が不可能となる。   In the manufacturing process of steel, it is common practice to cool steel materials and slabs by spraying spray water from a spray nozzle disposed on a conveying line for hot rolled steel materials and continuous cast slabs. In many cases, uniform cooling is required for cooling steel and cast slabs (hereinafter referred to as “steel etc.”) with spray water. For this reason, the water density of the spray water sprayed from the spray nozzle (spray water supply amount per unit area and unit time) is required to be uniform on the surface of the steel material or the like on which the spray water collides. However, since the cooling water supplied to the spray nozzle contains calcium or the like, the calcium or the like adheres and accumulates inside the spray nozzle, and spraying of the spray water may be uneven (non-uniform water density). is there. As the deposition of calcium and the like progresses, the amount of water in the spray water decreases, and when it further proceeds, the spray nozzle is completely blocked and spraying of the spray water becomes impossible.

上記問題に対して、例えば特許文献１では、スプレイノズル（スプレーノズル）の詰りを検出するため、スプレイノズルから放出される噴射水流（スプレー水）に直面する透視窓の背後に、透視窓を投光照射する照明装置と、透視窓の反射率変化を測定する撮像装置とを設置する、連続鋳造における冷却水噴射状況の判定方法および判定装置の発明が開示されている。特許文献１記載の発明では、スプレイノズルから放出される噴射水流が透視窓に衝突した際に生起される白濁部の輪郭を抽出し、当該輪郭の面積と当該輪郭内の階調別面積を算出して正常時の測定値と比較することによりスプレイノズルの詰りの有無を判別する。   For example, in Patent Document 1, in order to detect the clogging of the spray nozzle (spray nozzle), a transparent window is projected behind the transparent window facing the jet water flow (spray water) discharged from the spray nozzle. An invention of a method and apparatus for determining a cooling water injection state in continuous casting, in which an illumination device that irradiates light and an imaging device that measures a change in reflectance of a fluoroscopic window are installed is disclosed. In the invention described in Patent Document 1, the outline of the cloudy part generated when the jet water flow discharged from the spray nozzle collides with the fluoroscopic window is extracted, and the area of the outline and the area by gradation in the outline are calculated. Then, the presence or absence of clogging of the spray nozzle is determined by comparing with the measured value at the normal time.

また、特許文献２では、連続鋳造片の冷却むらを回避するため、ノズルに供給される冷却液の流量を検出する流量検出手段及び冷却液の圧力を検出する圧力検出手段と、ノズルから噴出される冷却液の噴出状況を撮像する冷却液撮像手段とを備える連続鋳造用冷却装置の故障検知装置の発明が開示されている。特許文献２記載の発明では、ノズルから噴出された冷却液の完全正常状態を冷却液撮像手段で確認して完全正常状態における冷却液の流量−圧力特性に関するしきい値を記憶しておき、連続鋳造状態における冷却液の流量−圧力特性に関する実際データと完全正常状態における冷却液の流量−圧力特性に関するしきい値とを比較し、実際データがしきい値を超えていると判断されたとき警報を発する。   Further, in Patent Document 2, in order to avoid uneven cooling of the continuous cast piece, the flow rate detecting means for detecting the flow rate of the cooling liquid supplied to the nozzle, the pressure detecting means for detecting the pressure of the cooling liquid, and the nozzle are ejected from the nozzle. An invention of a failure detection device of a cooling device for continuous casting comprising a coolant imaging means for imaging a state of jetting of coolant is disclosed. In the invention described in Patent Document 2, the complete normal state of the coolant ejected from the nozzle is confirmed by the coolant image pickup means, and a threshold value related to the flow rate-pressure characteristic of the coolant in the completely normal state is stored in advance. Compare the actual data on the flow rate-pressure characteristics of the coolant in the casting state with the threshold value on the flow rate-pressure characteristics of the coolant in the fully normal state, and warn when the actual data is judged to exceed the threshold value To emit.

さらにまた、スプレーノズルから噴射されるスプレー水の噴射領域をメッシュ状に区分けして各メッシュに計量容器を配置し、各計量容器に溜まるスプレー水の水量を測定することで、スプレー水の水量密度分布を求める方法が知られている。   Furthermore, the spray water volume density is determined by dividing the spray water spray area sprayed from the spray nozzle into mesh shapes, placing a measuring container on each mesh, and measuring the amount of spray water accumulated in each measuring container. A method for obtaining the distribution is known.

特開昭５８−２０２９５９号公報JP 58-202959 A 特開平４−２２４０６５号公報JP-A-4-224065

しかしながら、特許文献１記載の発明では、スプレイノズルから放出される噴射水流が透視窓に衝突した際に生起される白濁部全体を平均化して評価するため、スプレイノズルの部分的な詰り具合を正しく評価することが困難である。
また、特許文献２記載の発明では、ノズルから噴出される冷却液の流量−圧力特性を使用するため、ノズルの部分的な詰り等によって冷却液の噴出状況が不均一になる現象を検出することができない。加えて、連続鋳造機の二次冷却帯のような狭隘な箇所では、冷却液の完全正常状態を確認することが難しく、ノズルから冷却液が均一に噴出されているか評価することは困難である。
さらにまた、スプレー水の噴射領域をメッシュ状に区分けする方法は、スプレー水の水量密度分布を測定できるものの、測定に必要となる水量が計量容器に溜まるまで長時間を要することに加え、スプレー水を鋼材等に噴射する設備は一般に狭隘な箇所に配置されており、スプレー水の水量密度分布を測定するための機具を当該箇所に設置することは困難である。 However, in the invention described in Patent Document 1, since the entire cloudy portion generated when the jet water flow discharged from the spray nozzle collides with the fluoroscopic window is evaluated for evaluation, the partial clogging of the spray nozzle is correctly corrected. It is difficult to evaluate.
In addition, in the invention described in Patent Document 2, since the flow rate-pressure characteristics of the coolant ejected from the nozzle are used, a phenomenon in which the coolant ejection state becomes uneven due to partial clogging of the nozzle or the like is detected. I can't. In addition, in a narrow area such as the secondary cooling zone of a continuous casting machine, it is difficult to confirm the complete normal state of the cooling liquid, and it is difficult to evaluate whether the cooling liquid is uniformly ejected from the nozzle. .
Furthermore, although the spray water injection area can be divided into a mesh shape, the water density distribution of the spray water can be measured. In general, equipment for injecting water into a steel material or the like is arranged in a narrow place, and it is difficult to install a device for measuring the water density distribution of spray water at the place.

本発明はかかる事情に鑑みてなされたもので、スプレーノズル閉塞の前兆となるスプレー水の水量密度不均一を検出することが可能なスプレーノズル異常検出装置及びそれを用いたスプレーノズル異常検出方法を提供することを目的とする。   The present invention has been made in view of such circumstances, and provides a spray nozzle abnormality detection apparatus and a spray nozzle abnormality detection method using the spray nozzle abnormality detection apparatus that can detect the water density density non-uniformity of spray water that is a precursor of spray nozzle blockage. The purpose is to provide.

上記目的を達成するため、第１の発明は、鋼材又は鋳片に向けて噴射されるスプレー水の水量密度が２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎであるスプレーノズルの異常を検出する装置であって、
前記スプレーノズルから噴射されるスプレー水を衝突させる透光性衝突板と、前記スプレーノズルと前記透光性衝突板の間に設置され、スプレー水が通過する貫通孔が２個以上設けられた遮蔽板と、前記透光性衝突板を挟んで前記スプレーノズルの反対側に設置され、前記遮蔽板の貫通孔を通過して前記透光性衝突板に衝突したスプレー水の衝突状況を撮像する撮像装置及び前記透光性衝突板を照らす照明装置とを備えることを特徴としている。 To achieve the above object, a first aspect of the present invention, water density of the spray water sprayed toward the steel or cast slab detect the spray nozzle is 20L / m 2 / min~700L / m 2 / min abnormal A device that performs
A translucent collision plate that collides with spray water sprayed from the spray nozzle; and a shielding plate that is installed between the spray nozzle and the translucent collision plate and that has two or more through holes through which the spray water passes. An imaging device that is installed on the opposite side of the spray nozzle across the translucent collision plate, and that captures the collision situation of spray water that has passed through the through-hole of the shielding plate and collided with the translucent collision plate; And an illuminating device for illuminating the translucent collision plate.

また、第２の発明は、鋼材又は鋳片に向けて噴射されるスプレー水の水量密度が２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎであるスプレーノズルの異常を第１の発明に係るスプレーノズル異常検出装置を用いて検出する方法であって、以下の工程を備えている。
（１）前記スプレーノズルから噴射され、前記遮蔽板に設けられた貫通孔を通過したスプレー水が、前記照明装置に照らされている前記透光性衝突板に衝突したときの衝突状況を前記撮像装置で撮像する。
（２）隣接する前記貫通孔を通過したスプレー水が前記透光性衝突板上で干渉して発生する干渉領域の白濁状態を前記撮像装置で撮像された画像から定量化し、定量化された数値の経時変化から前記スプレーノズルの異常を検出する。 The second invention is water density of the spray water sprayed toward the steel or cast slab according to the spray nozzle is 20L / m 2 / min~700L / m 2 / min abnormality in the first invention A method of detecting using a spray nozzle abnormality detection device, comprising the following steps.
(1) Imaging the collision situation when spray water sprayed from the spray nozzle and passed through a through hole provided in the shielding plate collides with the translucent collision plate illuminated by the illumination device Take an image with the device.
(2) The turbid state of the interference region generated by the spray water passing through the adjacent through-holes interfering on the translucent collision plate is quantified from the image captured by the imaging device, and the quantified numerical value The abnormality of the spray nozzle is detected from the change with time.

２個以上の貫通孔が設けられた遮蔽板をスプレーノズルと透光性衝突板の間に設置すると、スプレーノズルから噴射され隣接する貫通孔を通過したスプレー水は、透光性衝突板上で干渉して干渉領域が白濁化する。干渉領域の白濁状態、例えば干渉領域の大きさ（面積）や輝度はスプレー水量に応じて変化する。具体的には、貫通孔を通過するスプレー水量が多ければ、干渉領域の拡大や輝度の上昇（白くなる）が認められ、貫通孔を通過するスプレー水量が少なければ、干渉領域の縮小や輝度の低下（黒くなる）が認められる。従って、干渉領域の白濁状態を評価することで、スプレーノズルの水量密度不均一の有無を検出することができる。   If a shielding plate having two or more through holes is installed between the spray nozzle and the light-transmitting collision plate, the spray water sprayed from the spray nozzle and passing through the adjacent through-hole interferes with the light-transmitting collision plate. The interference area becomes cloudy. The white turbid state of the interference region, for example, the size (area) and luminance of the interference region change according to the amount of spray water. Specifically, if the amount of spray water passing through the through hole is large, the interference region is enlarged and the brightness is increased (whitening). If the amount of spray water passing through the through hole is small, the interference region is reduced and the luminance is reduced. A decrease (blackening) is observed. Therefore, by evaluating the cloudiness state of the interference region, it is possible to detect whether or not the water amount density of the spray nozzle is uneven.

なお、スプレー水の水量密度が２０Ｌ／ｍ２／ｍｉｎ未満であると、スプレー水量が少なすぎて干渉領域が白濁化せず、スプレー水の水量密度が７００Ｌ／ｍ２／ｍｉｎ超になると、スプレー水量が多すぎて干渉領域の白濁化を判別することができなくなる。 When the water density of the spray water is less than 20 L / m 2 / min, the amount of spray water is too small and the interference area does not become clouded, and when the water density of the spray water exceeds 700 L / m 2 / min, The amount of water is too large to determine the white turbidity in the interference area.

本発明では、２個以上の貫通孔が設けられた遮蔽板をスプレーノズルと透光性衝突板の間に設置し、隣接する貫通孔を通過したスプレー水が透光性衝突板上で干渉することで発生する干渉領域の白濁状態を測定することにより、スプレー水の噴出状況が不均一になる現象を検出してスプレーノズルの部分的な詰り具合を正しく評価することができる。   In the present invention, a shielding plate provided with two or more through holes is installed between the spray nozzle and the translucent collision plate, and the spray water that has passed through the adjacent through holes interferes on the translucent collision plate. By measuring the white turbidity state of the generated interference region, it is possible to detect a phenomenon in which the spray state of the spray water becomes uneven and to correctly evaluate the partial clogging of the spray nozzle.

本発明の基本構成を示した模式図である。It is the schematic diagram which showed the basic composition of this invention. 透光性衝突板上に発生する干渉領域を示す説明図であり、（Ａ）は遮蔽板の貫通孔が２個の場合、（Ｂ）は遮蔽板の貫通孔が３個の場合、（Ｃ）は遮蔽板の貫通孔が４個の場合である。It is explanatory drawing which shows the interference area | region which generate | occur | produces on a translucent collision board, (A) is a case where there are two through-holes of a shielding board, (B) is a case where there are three through-holes of a shielding board, (C ) Is the case where there are four through holes in the shielding plate. （Ａ）は本発明の一実施の形態に係るスプレーノズル異常検出装置が内蔵されたダミーバーの斜視図、（Ｂ）は同ダミーバーの断面図である。(A) is a perspective view of a dummy bar in which a spray nozzle abnormality detection device according to an embodiment of the present invention is built, and (B) is a cross-sectional view of the dummy bar. 検証試験に使用した試験装置の構成を示す模式図である。It is a schematic diagram which shows the structure of the test apparatus used for the verification test. スプレーノズルの詰りの有無と最大輝度との関係を、エリアＡ、Ｂそれぞれについて示したグラフである。It is the graph which showed the relationship between the presence or absence of clogging of a spray nozzle, and the maximum brightness | luminance about each area A and B.

続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態について説明し、本発明の理解に供する。   Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

本発明に係るスプレーノズル異常検出装置１０は、図１に示すように、スプレーノズル１１の噴射孔１１ａに対峙し噴射孔１１ａから噴射されるスプレー水Ｗが衝突する透光性衝突板１６と、透光性衝突板１６を挟んでスプレーノズル１１の反対側に設置された撮像装置２２及び照明装置２４とを備えている。また、スプレーノズル１１と透光性衝突板１６の間には、スプレー水Ｗが通過する貫通孔１４が２個以上設けられた遮蔽板１２が透光性衝突板１６と平行に設置されている。   As shown in FIG. 1, the spray nozzle abnormality detection device 10 according to the present invention is a translucent collision plate 16 that collides with the spray water W that is sprayed from the spray hole 11 a while facing the spray hole 11 a of the spray nozzle 11, and An imaging device 22 and an illumination device 24 installed on the opposite side of the spray nozzle 11 with the translucent collision plate 16 interposed therebetween are provided. Further, between the spray nozzle 11 and the translucent collision plate 16, a shielding plate 12 provided with two or more through holes 14 through which the spray water W passes is installed in parallel with the translucent collision plate 16. .

スプレーノズル１１の噴射孔１１ａから噴射され、遮蔽板１２に設けられた貫通孔１４を通過したスプレー水Ｗは、空気を巻き込んで円錐状に拡散し、照明装置２４に照らされている透光性衝突板１６に衝突する。例えば貫通孔１４が２個の場合、貫通孔１４ａを通過したスプレー水Ｗ１と貫通孔１４ｂを通過したスプレー水Ｗ２は、透光性衝突板１６上で干渉し、干渉領域Ｋで水滴が発生する。干渉領域Ｋで水滴が発生すると、透光性衝突板１６を通過した照明装置２４の光が水滴に当たって乱反射し、干渉領域Ｋが白濁化する。
干渉領域Ｋの白濁度は発生した水滴の多寡に依存する。従って、干渉領域Ｋの大きさ（面積）や干渉領域Ｋの輝度（白さ）によって、発生した水滴の多寡を判別することができる。即ち、各貫通孔１４を通過するスプレー水Ｗの水量が多ければ、干渉領域Ｋの拡大や輝度の上昇（白くなる）が認められ、各貫通孔１４を通過するスプレー水Ｗの水量が少なければ、干渉領域Ｋの縮小や輝度の低下（黒くなる）が認められる。 The spray water W sprayed from the spray hole 11a of the spray nozzle 11 and passed through the through hole 14 provided in the shielding plate 12 is diffused in a conical shape by entraining air and is translucently illuminated by the lighting device 24. It collides with the collision plate 16. For example, when there are two through holes 14, the spray water W1 that has passed through the through hole 14a and the spray water W2 that has passed through the through hole 14b interfere with each other on the translucent collision plate 16, and water droplets are generated in the interference region K. . When a water droplet is generated in the interference region K, the light of the illumination device 24 that has passed through the translucent collision plate 16 strikes the water droplet and is irregularly reflected, and the interference region K becomes clouded.
The turbidity of the interference region K depends on the number of generated water droplets. Therefore, the number of generated water droplets can be determined based on the size (area) of the interference region K and the luminance (whiteness) of the interference region K. That is, if the amount of the spray water W passing through each through hole 14 is large, the interference region K is enlarged and the brightness is increased (whitening). If the amount of the spray water W passing through each through hole 14 is small, In addition, a reduction in the interference area K and a decrease in luminance (blackening) are observed.

因って、貫通孔１４を通過したスプレー水Ｗが、照明装置２４に照らされている透光性衝突板１６上で干渉して発生する干渉領域Ｋの白濁状態を撮像装置２２で撮像し、撮像画像に基づいて干渉領域Ｋの大きさ（面積）や輝度の経時変化を評価することで、スプレーノズル１１の水量密度不均一の有無を判別することができる。   Therefore, the imaging device 22 captures the cloudy state of the interference region K generated by the spray water W that has passed through the through-hole 14 interfered on the translucent collision plate 16 illuminated by the illumination device 24. By evaluating changes in the size (area) of the interference region K and the luminance over time based on the captured image, it is possible to determine whether or not the water density of the spray nozzle 11 is uneven.

透光性衝突板１６上に発生する干渉領域Ｋの位置を図２に示す。なお、同図における貫通孔１４ａ〜１４ｄは、遮蔽板１２の貫通孔１４ａ〜１４ｄを透光性衝突板１６上に投影したものである。
遮蔽板１２に設けられた貫通孔１４が２個の場合、隣接する貫通孔１４ａを通過したスプレー水Ｗ１と貫通孔１４ｂを通過したスプレー水Ｗ２が透光性衝突板１６上で干渉して、透光性衝突板１６上に投影された貫通孔１４ａと貫通孔１４ｂを結んだ線分の中点付近に干渉領域Ｋが発生する（図２（Ａ）参照）。また、貫通孔１４が３個の場合、隣接する貫通孔１４ａを通過したスプレー水Ｗ１と貫通孔１４ｂを通過したスプレー水Ｗ２と貫通孔１４ｃを通過したスプレー水Ｗ３が透光性衝突板１６上で干渉して、透光性衝突板１６上に投影された貫通孔１４ａ、貫通孔１４ｂ、及び貫通孔１４ｃを頂点とする三角形の中心付近に干渉領域Ｋが発生する（図２（Ｂ）参照）。同様に、貫通孔１４が４個の場合、隣接する貫通孔１４ａを通過したスプレー水Ｗ１、貫通孔１４ｂを通過したスプレー水Ｗ２、貫通孔１４ｃを通過したスプレー水Ｗ３、及び貫通孔１４ｄを通過したスプレー水Ｗ４が透光性衝突板１６上で干渉して、透光性衝突板１６上に投影された貫通孔１４ａ、貫通孔１４ｂ、貫通孔１４ｃ、貫通孔１４ｄを頂点とする四角形の中心付近に干渉領域Ｋが発生する（図２（Ｃ）参照）。 The position of the interference region K generated on the translucent collision plate 16 is shown in FIG. In addition, the through holes 14a to 14d in the figure are obtained by projecting the through holes 14a to 14d of the shielding plate 12 onto the translucent collision plate 16.
When there are two through holes 14 provided in the shielding plate 12, the spray water W1 that has passed through the adjacent through holes 14a and the spray water W2 that has passed through the through holes 14b interfere with each other on the translucent collision plate 16, An interference region K is generated in the vicinity of the midpoint of the line segment connecting the through hole 14a and the through hole 14b projected on the translucent collision plate 16 (see FIG. 2A). When there are three through holes 14, the spray water W1 that has passed through the adjacent through holes 14a, the spray water W2 that has passed through the through holes 14b, and the spray water W3 that has passed through the through holes 14c are on the translucent collision plate 16. The interference region K is generated in the vicinity of the center of the triangle having the through hole 14a, the through hole 14b, and the through hole 14c projected onto the translucent collision plate 16 (see FIG. 2B). ). Similarly, when there are four through holes 14, the spray water W1 that has passed through the adjacent through holes 14a, the spray water W2 that has passed through the through holes 14b, the spray water W3 that has passed through the through holes 14c, and the through holes 14d are passed. The center of the quadrangle having the through-hole 14a, the through-hole 14b, the through-hole 14c, and the through-hole 14d projected onto the translucent collision plate 16 as a result of interference of the sprayed water W4 on the translucent collision plate 16 An interference region K is generated in the vicinity (see FIG. 2C).

このように、本発明では、スプレー水Ｗが通過する貫通孔１４が２個以上設けられた遮蔽板１２をスプレーノズル１１と透光性衝突板１６の間に設置して透光性衝突板１６上にスプレー水Ｗの干渉領域Ｋを発生させることにより、鮮明な白濁部を安定的に発生させてスプレーノズル１１の詰り具合を正しく評価することができる。一方、特許文献１に記載されている従来方法の場合、白濁部の発生が不鮮明であることに加え不安定であるため、スプレーノズル１１の詰り具合を正しく評価することができない。   As described above, in the present invention, the shielding plate 12 provided with two or more through-holes 14 through which the spray water W passes is installed between the spray nozzle 11 and the translucent collision plate 16, thereby translucent collision plate 16. By generating the interference region K of the spray water W on the top, it is possible to stably generate a clear cloudy portion and correctly evaluate the clogging state of the spray nozzle 11. On the other hand, in the case of the conventional method described in Patent Document 1, since the generation of the cloudy portion is unclear and unstable, the degree of clogging of the spray nozzle 11 cannot be evaluated correctly.

本発明が対象とするスプレーノズル１１は、鋼材又は鋳片の均一冷却に使用されるスプレーノズルであって、鋼材又は鋳片に向けて噴射されるスプレー水Ｗの水量密度は２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎである。
スプレーノズル１１は、スプレー水Ｗの噴射領域がノズル径よりも広く、スプレーノズルとして、例えばミストノズルや円形噴射ノズル、楕円形噴射ノズルなどが存在する。なお、本発明が対象とするスプレーノズル１１は、水と空気の混合流体を噴射する気水ノズルも含む。 The spray nozzle 11 targeted by the present invention is a spray nozzle used for uniform cooling of a steel material or slab, and the water density of the spray water W sprayed toward the steel material or slab is 20 L / m 2 / It is min-700L / m < 2 > / min.
The spray nozzle 11 has a spray area of the spray water W wider than the nozzle diameter, and for example, there are a mist nozzle, a circular spray nozzle, an elliptical spray nozzle, and the like. The spray nozzle 11 targeted by the present invention also includes an air-water nozzle that ejects a mixed fluid of water and air.

透光性衝突板１６は、光が透過する板材であればよく、例えば透明なアクリル板やガラス板などを使用することができる。透光性衝突板１６の板厚としては、スプレー水Ｗの水圧によって透光性衝突板１６が撓まない程度の厚さであればよい。   The translucent collision plate 16 may be a plate material that transmits light, and for example, a transparent acrylic plate or glass plate can be used. The thickness of the translucent collision plate 16 may be a thickness that does not cause the translucent collision plate 16 to be bent by the water pressure of the spray water W.

一方、遮蔽板１２には金属製の板材などを使用することができる。遮蔽板１２に金属製の板材を使用した場合、遮蔽板１２の板厚は１ｍｍ〜２ｍｍ程度でよい。
透光性衝突板１６上にスプレー水Ｗの干渉領域Ｋを発生させるため、遮蔽板１２に形成する貫通孔１４は少なくとも２個以上必要である。好ましくは、遮蔽板１２の水平二方向にそれぞれ３個以上の貫通孔１４を形成することで、スプレーノズル１１の詰り具合をより良好な精度で検出することができる。
貫通孔１４の直径は４ｍｍ〜１０ｍｍ程度、隣接する貫通孔１４間の中心間距離は１０ｍｍ〜１００ｍｍ程度が目安となる。 On the other hand, a metal plate or the like can be used for the shielding plate 12. When a metal plate is used for the shielding plate 12, the thickness of the shielding plate 12 may be about 1 mm to 2 mm.
In order to generate the interference region K of the spray water W on the translucent collision plate 16, at least two through holes 14 formed in the shielding plate 12 are necessary. Preferably, by forming three or more through holes 14 in the two horizontal directions of the shielding plate 12, the degree of clogging of the spray nozzle 11 can be detected with better accuracy.
The diameter of the through hole 14 is about 4 mm to 10 mm, and the distance between the centers of the adjacent through holes 14 is about 10 mm to 100 mm.

なお、スプレーノズル１１と遮蔽板１２との距離並びに遮蔽板１２と透光性衝突板１６との距離は、スプレーノズル１１による噴射が正常な状態において透光性衝突板１６上にスプレー水Ｗの干渉領域Ｋが発生するように、スプレーノズル１１の水量密度並びに貫通孔１４の直径及び隣接する貫通孔１４間の中心間距離に応じて、設定する必要がある。   Note that the distance between the spray nozzle 11 and the shielding plate 12 and the distance between the shielding plate 12 and the light-transmitting collision plate 16 are such that the spray water W is sprayed on the light-transmitting collision plate 16 when the spraying by the spray nozzle 11 is normal. In order to generate the interference region K, it is necessary to set according to the water amount density of the spray nozzle 11, the diameter of the through hole 14, and the center-to-center distance between the adjacent through holes 14.

スプレー水Ｗの干渉領域Ｋを撮像する撮像装置２２には、乱反射した光を電圧に変換する撮像素子、例えばＣＣＤセンサやＣＭＯＳセンサを内蔵するデジタルカメラを使用することができる。ＣＣＤセンサやＣＭＯＳセンサは、光の強さに比例して電圧が変化するため、白濁化した干渉領域Ｋの輝度を数値化して評価することが可能となる。
また、透光性衝突板１６を照射する照明装置２４には、ＬＥＤ等の白色光源などを使用することができる。 For the imaging device 22 that images the interference region K of the spray water W, an image sensor that converts diffusely reflected light into a voltage, for example, a digital camera that incorporates a CCD sensor or a CMOS sensor can be used. Since the voltage of the CCD sensor or the CMOS sensor changes in proportion to the intensity of light, it is possible to evaluate the brightness of the interference region K that has become clouded by quantifying it.
Further, a white light source such as an LED can be used for the illumination device 24 that irradiates the translucent collision plate 16.

図３は、連続鋳造機の二次冷却帯を構成するスプレーノズルの異常を検出することができる本発明の一実施の形態に係るスプレーノズル異常検出装置２０を示したものである。本実施の形態におけるスプレーノズル異常検出装置２０は、連続鋳造の開始時に使用されるダミーバー２１に内蔵されている。図３（Ａ）は、スプレーノズル異常検出装置２０が内蔵されたダミーバー２１の斜視図、（Ｂ）はダミーバー２１の断面図である。   FIG. 3 shows a spray nozzle abnormality detection device 20 according to an embodiment of the present invention that can detect an abnormality of a spray nozzle that constitutes a secondary cooling zone of a continuous casting machine. The spray nozzle abnormality detection device 20 in the present embodiment is built in a dummy bar 21 used at the start of continuous casting. FIG. 3A is a perspective view of the dummy bar 21 in which the spray nozzle abnormality detection device 20 is built, and FIG. 3B is a cross-sectional view of the dummy bar 21.

スプレーノズル異常検出装置２０が内蔵されているダミーバー２１は、図３（Ｂ）に示すように中空とされ、ダミーバー２１を構成する筐体２６の一部が開口部とされ、複数の貫通孔１５が設けられた遮蔽板１３が当該開口部に取り付けられている。遮蔽板１３に設けられた貫通孔１５は、ダミーバー２１の走行方向及び幅方向にそれぞれ所定の間隔をあけてマトリックス状に配置されている。   The dummy bar 21 in which the spray nozzle abnormality detection device 20 is built is hollow as shown in FIG. 3B, and a part of the casing 26 constituting the dummy bar 21 is an opening, and the plurality of through holes 15 are formed. A shielding plate 13 provided with is attached to the opening. The through holes 15 provided in the shielding plate 13 are arranged in a matrix at predetermined intervals in the running direction and the width direction of the dummy bar 21.

ダミーバー２１の内部には、遮蔽板１３に対峙する位置に透光性衝突板１７が設置され、遮蔽板１３の貫通孔１５を通過して透光性衝突板１７に衝突したスプレー水の衝突状況を撮像する撮像装置２３及び透光性衝突板１７を照らす照明装置２５が、透光性衝突板１７を挟んで遮蔽板１３の反対側に設置されている。撮像装置２３及び照明装置２５は、パーソナルコンピュータなどの制御装置２８にケーブル２７を介して接続され、制御装置２８によって制御される。また、撮像装置２３で撮像した撮像画像は、ケーブル２７を介して制御装置２８に出力される。
なお、撮像装置２３及び照明装置２５にスプレー水がかからないようにするため、撮像装置２３及び照明装置２５は防水板２９で囲繞され、ダミーバー２１内に滲入したスプレー水を排出するための排出孔（図示省略）がダミーバー２１に設けられている。 Inside the dummy bar 21, a translucent collision plate 17 is installed at a position facing the shielding plate 13, and a collision state of spray water that has passed through the through hole 15 of the shielding plate 13 and collided with the translucent collision plate 17. An illuminating device 25 that illuminates the translucent collision plate 17 is installed on the opposite side of the shielding plate 13 with the translucent collision plate 17 interposed therebetween. The imaging device 23 and the illumination device 25 are connected to a control device 28 such as a personal computer via a cable 27 and are controlled by the control device 28. In addition, the captured image captured by the imaging device 23 is output to the control device 28 via the cable 27.
In order to prevent spray water from being applied to the imaging device 23 and the illumination device 25, the imaging device 23 and the illumination device 25 are surrounded by a waterproof plate 29, and a discharge hole (for discharging the spray water that has entered the dummy bar 21 ( (Not shown) is provided on the dummy bar 21.

以下、スプレーノズル異常検出装置２０が内蔵されたダミーバー２１を連続鋳造機に挿入して、二次冷却帯を構成するスプレーノズルの異常を検出する方法について説明する。
（１）二次冷却帯を構成するスプレーノズルから噴射され、貫通孔１５を通過したスプレー水が、照明装置２５に照らされている透光性衝突板１７上で干渉して発生する干渉領域の白濁状態を撮像装置２３で撮像する。
（２）撮像装置２３に内蔵されているＣＣＤセンサなどの撮像素子が、撮像視野の画素ごとの受光量を電圧に変換し、その電圧レベルを例えば２５６階調の輝度に変換する。撮像素子が変換した画素ごとの輝度は制御装置２８に出力される。
（３）制御装置２８では、撮像結果（白を２５５、黒を０とする２５６階調のグレー画像）がディスプレイ上に表示され、測定者はディスプレイ上で白濁部を指定する。測定者は、ディスプレイに表示される遮蔽板１３の貫通孔１５の位置を参考にして、隣接する貫通孔１５の中間付近に存在する白濁部を指定することができる。この指定によって白濁部の画素が確定し、指定された白濁部の輝度の最大値や平均値を算出（定量化）することができる。そして、この定量化された数値の経時変化からスプレーノズルの異常を検出する。 Hereinafter, a method for detecting an abnormality in the spray nozzle constituting the secondary cooling zone by inserting the dummy bar 21 in which the spray nozzle abnormality detecting device 20 is built into the continuous casting machine will be described.
(1) An interference region generated by the spray water sprayed from the spray nozzle constituting the secondary cooling zone and passing through the through hole 15 caused by interference on the translucent collision plate 17 illuminated by the illumination device 25. The cloudy state is imaged by the imaging device 23.
(2) An imaging element such as a CCD sensor built in the imaging device 23 converts the amount of received light for each pixel in the imaging field of view into a voltage, and converts the voltage level into, for example, a luminance of 256 gradations. The luminance for each pixel converted by the image sensor is output to the control device 28.
(3) In the control device 28, the imaging result (256 gray-scale gray image with 255 for white and 0 for black) is displayed on the display, and the measurer designates the cloudy part on the display. The measurer can designate the cloudy portion existing near the middle of the adjacent through hole 15 with reference to the position of the through hole 15 of the shielding plate 13 displayed on the display. By this designation, the pixel of the cloudy part is fixed, and the maximum value or average value of the luminance of the designated cloudy part can be calculated (quantified). Then, an abnormality of the spray nozzle is detected from the quantified numerical value with time.

以上、本発明の実施の形態について説明してきたが、本発明は何ら上記した実施の形態に記載の構成に限定されるものではなく、特許請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。例えば、上記実施の形態では、ダミーバーの内部にスプレーノズル異常検出装置を設置したが、スプレーノズル異常検出装置を特製の筐体で覆って単独の計測装置を構成してもよい。また、上記実施の形態では、撮像画像を２５６階調のグレー画像としたが、１０２４階調以上のカラー画像としてもよい。   Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations described in the above-described embodiments, and is considered within the scope of the matters described in the claims. Other embodiments and modifications are also included. For example, in the above embodiment, the spray nozzle abnormality detection device is installed inside the dummy bar. However, the spray nozzle abnormality detection device may be covered with a special housing to constitute a single measurement device. In the above embodiment, the captured image is a gray image having 256 gradations, but may be a color image having 1024 gradations or more.

本発明の効果について検証するために実施した検証試験について説明する。
検証試験に使用した試験装置の構成を図４に示す。スプレーノズル１１に対峙するように透光性遮蔽板１６を設置し、透光性衝突板１６を挟んでスプレーノズル１１の反対側に撮像装置２２と照明装置２４を設置した。そして、スプレー水Ｗが通過する貫通孔１４ａ、１４ｂが設けられた遮蔽板１２を、遮蔽板１２の一部がスプレーノズル１１の噴射領域を覆うように、スプレーノズル１１と透光性衝突板１６の間に配置した。
なお、スプレーノズル１１による噴射が正常な状態において透光性衝突板１６上にスプレー水Ｗの干渉領域が発生するように、スプレーノズル１１、遮蔽板１２、及び透光性衝突板１６の位置、並びに貫通孔１４ａ、１４ｂの直径及び中心間距離を調整した。 A verification test carried out to verify the effects of the present invention will be described.
FIG. 4 shows the configuration of the test apparatus used for the verification test. A translucent shielding plate 16 was installed so as to face the spray nozzle 11, and an imaging device 22 and an illumination device 24 were installed on the opposite side of the spray nozzle 11 with the translucent collision plate 16 interposed therebetween. And the spray nozzle 11 and the translucent collision plate 16 cover the shielding plate 12 provided with the through holes 14 a and 14 b through which the spray water W passes so that a part of the shielding plate 12 covers the spray region of the spray nozzle 11. Arranged between.
The positions of the spray nozzle 11, the shielding plate 12, and the translucent collision plate 16 so that an interference region of the spray water W is generated on the translucent collision plate 16 in a state where the spraying by the spray nozzle 11 is normal. In addition, the diameters and center-to-center distances of the through holes 14a and 14b were adjusted.

図４に示すように、透光性衝突板１６上に投影された貫通孔１４ａと貫通孔１４ｂの中間点付近を干渉領域が発生するエリアＡ、遮蔽板１２に遮られていない透光性衝突板１６上の特定領域をエリアＢとし、エリアＡとエリアＢが撮像装置２２の撮像視野に収まるようにエリアＡとエリアＢを設定した。   As shown in FIG. 4, an area A where an interference region is generated in the vicinity of an intermediate point between the through hole 14 a and the through hole 14 b projected on the translucent collision plate 16, and the translucent collision not blocked by the shielding plate 12. The specific area on the plate 16 is defined as area B, and the areas A and B are set so that the areas A and B are within the imaging field of view of the imaging device 22.

また、スプレーノズル１１には正常噴射を行うスプレーノズル（水量密度は２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎ）を使用し、スプレーノズル１１に供給される水量を３０％減じることで、詰りのあるスプレーノズルを模擬した。
スプレーノズル１１に詰りがある状態と詰りがない状態をそれぞれ１０回撮像し、エリアＡとエリアＢの各最大輝度（白を２５５、黒を０とする２５６階調値）をプロットした。スプレーノズル１１の詰りの有無と最大輝度との関係を、エリアＡ、Ｂそれぞれについて図５に示す。なお、同図は、詰りのない状態におけるスプレーノズル１１の水量密度が２００Ｌ／ｍ２／ｍｉｎの場合の結果を示している。また、バックグラウンド光（エリアＡでは遮蔽板１２からの反射光、エリアＢではスプレーノズル１１側からの反射光）の影響をエリアＡとエリアＢで同一条件とするため、白濁部の最大輝度からバックグラウンド光の最大輝度を差し引いた値を縦軸に示している。 Also, spray spray nozzles to perform normal injection in nozzle 11 (water density is 20L / m 2 / min~700L / m 2 / min) by using a reducing the amount of water supplied to the spray nozzle 11 to 30%, A clogged spray nozzle was simulated.
A state where the spray nozzle 11 is clogged and a state where the spray nozzle 11 is not clogged were imaged 10 times, and the maximum luminance of each of the areas A and B (256 gradation values with 255 for white and 0 for black) was plotted. The relationship between the presence / absence of clogging of the spray nozzle 11 and the maximum luminance is shown in FIG. In addition, the figure has shown the result in case the water quantity density of the spray nozzle 11 in the state without clogging is 200 L / m < 2 > / min. In addition, since the influence of background light (reflected light from the shielding plate 12 in area A and reflected light from the spray nozzle 11 in area B) is the same in area A and area B, the maximum luminance of the cloudy part is A value obtained by subtracting the maximum luminance of the background light is shown on the vertical axis.

実施例であるエリアＡでは、スプレーノズル１１に詰りがない場合、白濁部が発生して最大輝度が高くなり、スプレーノズル１１に詰りがある場合、エリアＡにおけるスプレー水量が不足し、白濁部が現れず最大輝度が低くなる。スプレーノズル１１に詰りがない場合と詰りがある場合の最大輝度の平均値の差は３０以上あり、スプレーノズル１１の詰りの有無を明確に判別することができる。
一方、比較例であるエリアＢでは、スプレーノズル１１の詰りの徴候は見られるが、明確な輝度差は認められず、スプレーノズル１１の詰りの有無を判別することができない。また、比較例は、実施例に比べて最大輝度の変動が大きいことがわかる。
なお、詰りのない状態におけるスプレーノズル１１の水量密度を、２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎの間で変更しても上記と同様の傾向が認められた。 In the area A which is an embodiment, when the spray nozzle 11 is not clogged, a cloudy part is generated and the maximum luminance is increased. When the spray nozzle 11 is clogged, the amount of spray water in the area A is insufficient and the cloudy part is It does not appear and the maximum brightness is lowered. There is a difference of 30 or more in the average value of the maximum brightness when the spray nozzle 11 is not clogged and when the spray nozzle 11 is clogged, and it is possible to clearly determine whether or not the spray nozzle 11 is clogged.
On the other hand, in area B, which is a comparative example, signs of clogging of the spray nozzle 11 are observed, but a clear luminance difference is not recognized, and it is impossible to determine whether the spray nozzle 11 is clogged. Moreover, it turns out that the fluctuation | variation of the maximum brightness | luminance is large in a comparative example compared with an Example.
Incidentally, the water density of the spray nozzle 11 in the absence of clogging, changing between 20L / m 2 / min~700L / m 2 / min was observed the same tendency as described above.

１０、２０：スプレーノズル異常検出装置、１１：スプレーノズル、１１ａ：噴射孔、１２、１３：遮蔽板、１４、１４ａ、１４ｂ、１４ｃ、１４ｄ、１５：貫通孔、１６、１７：透光性衝突板、２１：ダミーバー、２２、２３：撮像装置、２４、２５：照明装置、２６：筐体、２７：ケーブル、２８：制御装置、２９：防水板、Ｋ：干渉領域、Ｗ、Ｗ１、Ｗ２、Ｗ３、Ｗ４：スプレー水 10, 20: Spray nozzle abnormality detection device, 11: Spray nozzle, 11a: Injection hole, 12, 13: Shield plate, 14, 14a, 14b, 14c, 14d, 15: Through hole, 16, 17: Translucent collision Plate, 21: dummy bar, 22, 23: imaging device, 24, 25: illumination device, 26: housing, 27: cable, 28: control device, 29: waterproof plate, K: interference region, W, W1, W2, W3, W4: Spray water

Claims (2)

鋼材又は鋳片に向けて噴射されるスプレー水の水量密度が２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎであるスプレーノズルの異常を検出する装置であって、
前記スプレーノズルから噴射されるスプレー水を衝突させる透光性衝突板と、前記スプレーノズルと前記透光性衝突板の間に設置され、スプレー水が通過する貫通孔が２個以上設けられた遮蔽板と、前記透光性衝突板を挟んで前記スプレーノズルの反対側に設置され、前記遮蔽板の貫通孔を通過して前記透光性衝突板に衝突したスプレー水の衝突状況を撮像する撮像装置及び前記透光性衝突板を照らす照明装置とを備えることを特徴とするスプレーノズル異常検出装置。 An apparatus for water density of the spray water sprayed toward the steel or cast strip detects the spray nozzle is 20L / m 2 / min~700L / m 2 / min abnormal,
A translucent collision plate that collides with spray water sprayed from the spray nozzle; and a shielding plate that is installed between the spray nozzle and the translucent collision plate and that has two or more through holes through which the spray water passes. An imaging device that is installed on the opposite side of the spray nozzle across the translucent collision plate, and that captures the collision situation of spray water that has passed through the through-hole of the shielding plate and collided with the translucent collision plate; A spray nozzle abnormality detection device comprising: an illumination device that illuminates the translucent collision plate. 鋼材又は鋳片に向けて噴射されるスプレー水の水量密度が２０Ｌ／ｍ２／ｍｉｎ〜７００Ｌ／ｍ２／ｍｉｎであるスプレーノズルの異常を請求項１記載のスプレーノズル異常検出装置を用いて検出する方法であって、
前記スプレーノズルから噴射され、前記遮蔽板に設けられた貫通孔を通過したスプレー水が、前記照明装置に照らされている前記透光性衝突板に衝突したときの衝突状況を前記撮像装置で撮像する工程と、
隣接する前記貫通孔を通過したスプレー水が前記透光性衝突板上で干渉して発生する干渉領域の白濁状態を前記撮像装置で撮像された画像から定量化し、定量化された数値の経時変化から前記スプレーノズルの異常を検出する工程とを備えることを特徴とするスプレーノズル異常検出方法。 Water flow rate of the spray water sprayed toward the steel or cast slab 20L / m 2 / min~700L / m 2 / min of the spray nozzle is abnormal detection using a spray nozzle abnormality detecting device according to claim 1, wherein A way to
The imaging device captures an impact situation when spray water sprayed from the spray nozzle and passed through a through hole provided in the shielding plate collides with the translucent collision plate illuminated by the illumination device. And a process of
The turbid state of the interference region generated by the spray water that has passed through the adjacent through-holes interfering on the translucent collision plate is quantified from the image captured by the imaging device, and the quantified numerical value changes with time. And a step of detecting an abnormality in the spray nozzle.
JP2013251193A 2013-12-04 2013-12-04 Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same Active JP6201699B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013251193A JP6201699B2 (en) 2013-12-04 2013-12-04 Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013251193A JP6201699B2 (en) 2013-12-04 2013-12-04 Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same

Publications (2)

Publication Number Publication Date
JP2015107502A true JP2015107502A (en) 2015-06-11
JP6201699B2 JP6201699B2 (en) 2017-09-27

Family

ID=53438294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013251193A Active JP6201699B2 (en) 2013-12-04 2013-12-04 Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same

Country Status (1)

Country Link
JP (1) JP6201699B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523234U (en) * 1978-07-27 1980-02-14
JPS58202959A (en) * 1982-05-20 1983-11-26 Kawasaki Steel Corp Method and device for deciding spraying condition of cooling water in continous casting
JPS62131768U (en) * 1986-02-10 1987-08-20

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523234U (en) * 1978-07-27 1980-02-14
JPS58202959A (en) * 1982-05-20 1983-11-26 Kawasaki Steel Corp Method and device for deciding spraying condition of cooling water in continous casting
JPS62131768U (en) * 1986-02-10 1987-08-20

Also Published As

Publication number Publication date
JP6201699B2 (en) 2017-09-27

Similar Documents

Publication Publication Date Title
JP5678018B2 (en) Apparatus and method for maintenance and inspection of 3D printer
US7412088B2 (en) Inspection method, and inspection device, and manufacturing for display panel
CN105723209B (en) Decoration production line
JP2008513199A (en) Apparatus and method for maintenance and inspection of 3D printer
JP4700141B1 (en) Glass product gob inspection equipment
Castrejón-García et al. The shadowgraph imaging technique and its modern application to fluid jets and drops
CN101107512A (en) Article visual inspection device
JP2005231360A (en) Device and method for recognizing and evaluating image from prescribed part of printed matter
GB2507069A (en) Monitoring the quality of an electrostatic coating by measuring light reflected from a spray
RU2713520C1 (en) Panel for pressing material from wood-based material and method for controlling a device for pressing a panel of wood material
JP6201699B2 (en) Spray nozzle abnormality detection device and spray nozzle abnormality detection method using the same
JP2009072691A (en) Ink jet state inspection device, manufacturing apparatus for flat panel, and flat panel
JP5529630B2 (en) Spray injection condition monitoring device
KR20170072718A (en) Apparatus for testing performance of descaling nozzle
JP2009160546A (en) Coating-nozzle inspection apparatus, inspection method and coating method of coating liquid
JP6508756B1 (en) Macro inspection apparatus and method for inspecting variation in ink droplet volume
CN213843057U (en) Melt-blown fabric detection device
CN114393925A (en) Ink drop observation system for ink-jet printing, observation system and regulation and control method
JP2004061311A (en) Manufacturing device and manufacturing method of aluminium extruded profile
KR101498607B1 (en) Method for selecting a region of a paste pattern for inspection
KR101260060B1 (en) Inspection equipment and method using the same
JP5281315B2 (en) Slag solidification determination device, slag solidification determination program, and slag solidification determination method
JPS58202959A (en) Method and device for deciding spraying condition of cooling water in continous casting
JP3393088B2 (en) Cleaning liquid ejection failure detection device
JP6768916B2 (en) Plate edge detection device and plate edge detection method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20160803

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20170526

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170606

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170719

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170801

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170814

R151 Written notification of patent or utility model registration

Ref document number: 6201699

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350